After fertilizing my yard, some granules on my driveway and garage floor when wetted, made bad iron rust stains, lots of them, and I can't clean them off. I've used my pressure washer, muriatic acid, The Works, Simple Green and two other "miracle" cleaners, nothing even touches them, I've scrubbed with a stiff brush until I was blue in the face...they're like BB sized stains, some have run down the driveway. The worst part is I just listed my home for sale, and had a showing today, they didn't like it at all!

Any ideas guys and gals?

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Boat guys use ospho to reduce or clean up stains in fiberglass that occur from the stainless pieces that rust. It has to soak for a bit. It is phosphoric acid. It might work...dunno.
CLR may have phosphouric acid in it, I dont know.It supposed to clean up rust stains too.Just a thought.

I might try the boat cleaner, but I did find a review of some stuff called Super Iron Out from a gal in Killeen, TX, near me, had the same Scotts product stain hers, said CLR did nothing, so I'm off later to get some super stuff and give it a try. I have some stains in the garage as well, so maybe this isn't too far off topic for the HRB...

Thanks guys

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I'm the one your momma never told you about...

Semper Fi

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I had the same problem. Use toilet bowl cleaner, the kind that squirts upward in the toilet. The Works was good stuff, wife got it at the 99 cent store. Spray it on the spots, when it quits foaming, rinse with the hose. Might take 2-3 times, depending on how bad the stain is.

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"When I was younger, I could remember anything, whether it had happened or not." - Mark Twain

Here is another one to try. When i sold my small yacht it had white nylon sails with rust spots in them from being wrapped up with wet steel fittings. The guy at the slip yard sold me a small jar of "OXALIC ACID". The rust spots came out to my amazement after leaving this stuff for about 5 minutes on the sail and then scrubbing with a hard brush.
Maybe be totally different on a drive but you never know.
Al.

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